FBI looking for Chicago man who fired rifle on Metra platform

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The F B I need your help finding a man seen on surveillance video, firing a shot from a rifle while on the platform of the Metro Station and McCormick Place on December. 1st. FBI Special agent Shabaan Johnson says nobody was hurt. And nobody appeared to be on the platform when it happened. Walking down the long platform stopped put his backpack down, pulled out a collapsible rifle put it together, fired one shot seemingly into the wall. And then he collapsed. His rifle, put it back in his backpack, and he simply left us nothing that happens. The FBI is released two videos, including one that shows a clear image of the man's face. The suspect is considered armed and

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